| Anhydrous
sodium sulphite(sulphite)--Industrial
grade 
Molecular Formula:Na2SO3
Molecular Weight: 126.04
CAS NO:7757-83-7
Appearance:white crystalline
powder
Character:with the smell of sulfur dioxide
, lose SO2 in the air,become the sulfate
Solubility:soluble in water,slightly soluble
in alcohol,insoluble in liquid ammonia
Usages:Main used in printing
and dyeing,paper making,photo,food,pharmacy,petroleum chemical
and so on
Packing:25kg PE bag or 1000kg/bag Product
specifications:
|
Items |
Index |
|
Excellent |
First
Class |
|
Standard |
Reference
|
Standard |
Reference
|
Standard |
Reference
|
| Na2SO3
≥% |
98.0 |
98.4 |
97 |
97.6 |
96.0 |
96.5 |
| Fe≤ % |
0.003 |
0.002 |
0.03 |
0.0025 |
0.005 |
0.003 |
| Insoluble in water≤ % |
0.02 |
0.01 |
0.02 |
0.012 |
0.03 |
0.026 |
| Na2CO3≤
% |
0.1 |
0.06 |
0.1 |
0.08 |
0.4 |
0.2 |
| Na2SO4≤
% |
1.5 |
1.3 |
2.5 |
2.2 |
|
|
| Nacl≤ % |
0.01 |
0.05 |
0.1 |
0.02 |
|
|
|
